Attitude control is a means of determining and maintaining proper orientation in space. In 2152, Captain Jonathan Archer was able to identify the attitude control panel of an Enolian transport. (ENT: "Canamar") In 2365, the sentient holodeck character, Professor James Moriarty, on the USS Enterprise-D was able to construct a crude device that toggled attitude control in the holodeck. He used this several times, causing the ship to shudder uncontrollably. (TNG: "Elementary, Dear Data" )